Platform
python
Component
confire
Fixed in
0.2.1
CVE-2017-16763 describes a critical Insecure Deserialization vulnerability affecting Confire versions 0.2.0 and earlier. This flaw allows attackers to execute arbitrary Python code by manipulating the user-specific configuration file, ~/.confire.yaml. The vulnerability stems from the use of the yaml.load function without proper sanitization, enabling malicious YAML payloads to be interpreted as Python commands. A patch is required to resolve this issue.
The impact of CVE-2017-16763 is severe, granting an attacker the ability to execute arbitrary code on the system running Confire. This can lead to complete system compromise, including data theft, modification, and denial of service. The attacker only needs to be able to write to the user's ~/.confire.yaml file, which is often accessible. Successful exploitation could allow an attacker to gain persistent access to the system and move laterally within the network if Confire is used as part of a larger infrastructure. This vulnerability shares similarities with other deserialization flaws where untrusted data is processed without validation, potentially leading to code execution.
CVE-2017-16763 was publicly disclosed on July 18, 2018. While no active exploitation campaigns are explicitly confirmed, the vulnerability's critical severity and ease of exploitation make it a potential target. It is not currently listed on the CISA KEV catalog. Public proof-of-concept exploits are likely to exist or could be developed given the nature of the vulnerability.
Exploit Status
EPSS
1.92% (83% percentile)
CVSS Vector
The primary mitigation for CVE-2017-16763 is to upgrade Confire to a version that addresses the vulnerability. Unfortunately, no specific patched version is listed in the provided data. As a workaround, consider restricting access to the ~/.confire.yaml file to prevent unauthorized modification. Implement input validation and sanitization for all YAML data processed by Confire. If upgrading is not immediately feasible, carefully review the contents of ~/.confire.yaml for any suspicious or unexpected code. After upgrading, verify the fix by attempting to load a known malicious YAML payload and confirming that it is rejected or handled safely.
No official patch available. Check for workarounds or monitor for updates.
Vulnerability analysis and critical alerts directly to your inbox.
CVE-2017-16763 is a critical vulnerability in Confire versions 0.2.0 and earlier that allows attackers to execute arbitrary Python code by manipulating the ~/.confire.yaml configuration file.
You are affected if you are using Confire version 0.2.0 or earlier. Check your Confire version and upgrade immediately if vulnerable.
Upgrade Confire to a patched version. As no specific patched version is listed, carefully review and restrict access to the ~/.confire.yaml file.
While no active exploitation campaigns are explicitly confirmed, the vulnerability's critical severity and ease of exploitation make it a potential target.
Refer to the NVD entry for CVE-2017-16763 for more information and potential links to relevant advisories: https://nvd.nist.gov/vuln/detail/CVE-2017-16763
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